Futures:

    - Strings view for binary responses.
    - Post and URL field parsing and editing.
    - On-the-fly generation of keys, signed with a CA
    - Pass-through fast-track for things that don't match filter?
    - Shortcut for viewing in pager
    - Upstream proxies.
    - mitmdump
        - Filters
        - Sticky cookies
        - Pipe to script
        - Command-line replay or serialized flows


Bugs:
    
    - In some circumstances, long URLs in list view are line-broken oddly.
    - Termination sometimes hangs.
    - When a bug in mitmproxy causes a stack trace, we hang on exit.